Methods and devices for nebulizing fluids

• US 6,543,443 B1
• Filed: 07/12/2000
• Issued: 04/08/2003
• Est. Priority Date: 07/12/2000
• Status: Expired due to Term

• Current Assignee: Novartis Pharma AG (Novartis Ag)
• Original Assignee: Aerogen, Inc. (Nektar Therapeutics)
• Inventors: Stevens, Richard, Uster, Paul, Klimowicz, Michael, Flierl, Markus, Maxwell, Joseph
• Primary Examiner(s): Lewis, Aaron J.
• Assistant Examiner(s): Erezo, Darwin P.
• Application Number:
  US09/614,306
• Time in Patent Office: 1,000 Days
• Field of Search: 128/200.14, 128/200.16, 128/200.19, 128/200.23, 128/200.22, 128/203.12, 128/203.22, 128/203.21, 604/87, 604/200, 604/244, 239/338
• US Class Current: 128/200.23
• CPC Class Codes: A61M 15/0003 with means for dispensing more than one drug
• CPC Class Codes: A61M 15/0085 using ultrasonics spraying or atomising liquids using ultrasonic vibrations in general B05B17/06
• CPC Class Codes: B05B 17/0646 Vibrating plates, i.e. plates being directly subjected to the vibrations, e.g. having a piezoelectric transducer attached thereto
• CPC Class Codes: B05B 7/0408 with arrangements for mixing two or more liquids

Abstract

A nebulizing device having two or more nebulizing elements. The nebulizing device may be used to deliver two or more fluids to the patient or may be used for enhanced fluid flow of a single fluid. The nebulizing elements are preferably vibrating elements with holes therein through which the fluid is expelled when the vibrating elements are vibrated.

Claims

1. A method of nebulizing a substance, comprising the steps of:

providing a device having a housing, a first nebulizer, and a second nebulizer, the first and second nebulizers being mounted within the housing;

delivering fluid to the first and second nebulizers, the fluid delivering step being carried out with a fluid cartridge mounted to the housing, the fluid being delivered to both the first and second nebulizers from the cartridge, the fluid delivering step being carried out with the fluid cartridge having a first fluid container containing a first fluid and a second fluid container containing a second fluid, the first fluid container supplying the first fluid to the first nebulizer and the second fluid container supplying the second fluid to the second nebulizer;

activating the first and second nebulizers thereby nebulizing the fluid.

2. The method of claim 1, wherein:

the providing step is carried out with the first nebulizer having a first vibrating element having a first plurality of apertures and the second nebulizer has a second vibrating element having a second plurality of apertures.

3. The method of claim 1, wherein:

the fluid delivering step is carried out with the first fluid being a fluid selected from the group consisting of beta-agonist, mucolytic, and an immune modulator and the second fluid is a fluid selected from the group consisting of an antibiotic, an antifungal, and a corticosteroid.

4. The method of claim 1, wherein:

the activating step is carried out with the first and second nebulizers being activated for different lengths of time.

5. The method of claim 1, wherein:

the activating step is carried out with the first and second nebulizers being activated at the same time.

6. The method of claim 1, wherein:

the delivering step is carried out with discrete volumes of fluid being delivered to the first and second nebulizers.

7. The method of claim 1, wherein:

the providing step is carried out with the housing having a mouthpiece; and

the method further comprising the step of inhaling through the mouthpiece to deliver the nebulized fluid to the lungs.

8. The method of claim 1, wherein:

the delivering step is carried out by delivering 40-300 microliters of fluid in one breath.

9. The method of claim 8, wherein:

the delivering step is carried out by delivering at least 100 microliters in one breath.

10. The method of claim 8, wherein:

the delivering step is carried out by delivering at least 200 microliters of fluid in one breath.

11. The method of claim 10, wherein:

the delivering step is carried out by delivering the amount in less than four seconds.

12. A method of nebulizing a substance, comprising the steps of:

providing a device having a housing, a first nebulizer, and a second nebulizer, the first and second nebulizers being mounted within the housing;

delivering fluid to the first and second nebulizers, the fluid delivering step being carried out with a fluid cartridge mounted to the housing, the fluid being delivered to both the first and second nebulizers from the cartridge;

activating the first and second nebulizers thereby nebulizing the fluid, the activating step being carried out with the first and second nebulizers being activated at the same time.

13. The method of claim 12, wherein:

the providing step is carried out with the first nebulizer having a first vibrating element having a first plurality of apertures and the second nebulizer has a second vibrating element having a.second plurality of apertures.

14. The method of claim 12, wherein:

the fluid delivering step is carried out with the fluid cartridge having a first fluid container containing a first fluid and a second fluid container containing a second fluid, the first fluid container supplying the first fluid to the first nebulizer and the second fluid container supplying the second fluid to the second nebulizer.

15. The method of claim 14, wherein:

the fluid delivering step is carried out with the first fluid being a fluid selected from the group consisting of beta-agonist, mucolytic, and an immune modulator and the second fluid is a fluid selected from the group consisting of an antibiotic, an antifungal, and a corticosteroid.

16. The method of claim 12, wherein:

the activating step is carried out with the first and second nebulizers being activated for different lengths of time.

17. The method of claim 12, wherein:

the delivering step is carried out with discrete volumes of fluid being delivered to the first and second nebulizers.

18. The method of claim 12, wherein:

the providing step is carried out with the housing having a mouthpiece; and

the method further comprising the step of inhaling through the mouthpiece to deliver the nebulized fluid to the lungs.

19. The method of claim 12, wherein:

the delivering step is carried out by delivering 40-300 microliters of fluid in one breath.

20. The method of claim 19, wherein:

the delivering step is carried out by delivering at least 100 microliters in one breath.

21. The method of claim 19, wherein:

the delivering step is carried out by delivering at least 200 microliters of fluid in one breath.

22. The method of claim 21, wherein:

the delivering step is carried out by delivering the amount in less than four seconds.